When the earth is at perihelion, what solar terms are there in the northern hemisphere of the earth?

When the earth is at perihelion, the northern hemisphere of the earth is winter solstice.

Winter solstice, also known as "one-day birth", is an important solar term in the China lunar calendar [1] and a traditional festival of the Chinese nation. The solstice in winter is commonly known as "number nine, winter festival", "long festival" and "sub-year" As early as more than 2,500 years ago in the Spring and Autumn Period, China had observed the sun with earth gauges and determined the winter solstice, which was the earliest of the 24 solar terms, and the time was between June 65438+February 2 1 ~23 in the Gregorian calendar every year.